Hi @Cheryl - So sorry to hear about this recurrence after 40 years! What a drag! I hope you can get it under control soon. I highly recommend the D3 regimen. I started it for the first time at the beginning of this month (December), and after 2 weeks, my CHs are totally under control. The D3 regimen basically aborted my cycle. Sometimes I will wake up feeling like I have a CH coming on, but once I get out of bed, oddly, it just goes away on its own. I rarely even have to take ibuprofen for these headaches, and I haven't had to take a Relpax (triptan) in 2-3 weeks.
And even though you're cycle has now lasted 2+ months, I'm not sure I'd call your condition chronic CH. The cycle I had last year lasted 5 months (it was awful - my worst ever), but it finally ended on its own last May. Here's hoping yours ends MUCH sooner than that. Give the D3 a try. Best.